John mclennan



(No Model.)

J. MQLENNAN & R. OWEN. I APPARATUS-FOR REGULATING THE SUPPLY OF GAS.

No, 269.087 Patented Dec. 12, 1882.

, UN TED STATES PATENT OFFICE,

JOHN MGLENINAN, or 84 FINSBURY PARK ROAD, AND RICHARD OWEN, or

ENGLAND LANE, HAVERSTOOK HILL, COUNTY OF MIDDLESEX, ENGLAND.

APPARATUS FOR REG ULATlNG THP SUPPLY OF GAS.

SPECIFICATION forming part of Letters Patent No. 269,087, dated. December 12, 1882.

Application filed December 10, 1881. (No model.) Patented in England March 11, 1880, No. 1,055.

To all whom it may concern I Be it known that we, JOHN MCLENNAN, liorologist, of 84 Finsbury Park Road, and RICHARD OWEN, gentleman, of England Lane,

Haverstock Hill, both in the county of Middlesex, England, have invented a newand usefullmprovement in Apparatus for Regulating the Supplyot' Gas to Burners, (for which we have obtained Letters Patent of Great Britain No. 1,055, dated March 11, 1880,) of which the following is a description, reference being bad to the accompanying drawings.

This invention has reference to the mode of regulating thesupply of gas from the meter to any required number of lights, and also to individualburners; and it consists in the adaptation and application tosuch purpose or purposes of self-acting apparatus in which the supply of gas is regulated, in the manner hereinafterdescribed, by means of alever working in a chamber on centers fitted between the inlet and the outlet forthe gas, such lever being connected at one end to the valve for admitting the gas to the chamber,and at the other end to the valve for its escape therefrom, thus giving a uniform light under the various pressures of gas. The inlet-valve is closed by the action of gravity on that end of the lever when the pressure of gas on the under side of the valve is diminished, and by the same action on the lever the outlet-valve at the opposite end thereof is opened. The reverse action takes place when the inlet-valve is opened by the pressure of gas, which causes the outlet-valve at the opposite end of the lever to be partially closed. By means of this arrangement, on the entrance of the gas into the chamber, owing to its pressure on the inlet-valve, the action of the lever closes the outlet, so that the gas is confined in the chamber until by the diminution of pressure on the inlet-valve, owing to an approximate equilib- -rium of the pressures on'each side thereof, the

action of gravity on the inlet end of the lever causes the inlet-valve to be partially closed, when the outlet-valve is opened and the gas allowed toescape.

When the apparatus is used as a regulator for the supply of gasto a number of burners the chamber, and also the lever and valves,

low

apparatus is adjusted; and when the apparatus is applied to a single burner it is intended to Work the lever by applyinga suitable weight or spring at thelower end, and the gas is made to enter the chamber ata part bethe fulcrum of the lever and toescape from it at a part above the same, a stop being inserted or formed in the gas-supply pipe at'a part between the inlet and the outlet.

In the drawings, Figure 1 represents the apparatus arranged as a regulator for the supply of gas to any required number of lights. Figs. 2 and3 represent the apparatus as ap plied to a single burner.

In Fig. 1,A is the chamber for receiving the 7 gas as it passes from the meter to the burners.

In the center of this chamber there is a central tube, K D, the lower end of which is connected with the supply-pipe from the service or main, and to the upper end of which is connected the pipe leading-to the burners. In this tube K :p is a transverse partition, L. Below this partition there is an inlet from the said tube to the chamberA, fitted with acover or valve, B, and above the said partition is an outlet, G, fitted with the conical valve E, which serves to regulate the supply of gas to the burners. The said valves B and E are attached respectively to the lower and upper ends of the lever F, having a fulcrum, G. I I designate two springs, each consisting of an upright portion and a horizontal prolongation adapted to act on the lever F. The upper of these two springs bears upon the lever F continuously, and actuates the lever to close 5 the valve E; but the lower one simply actsas a stop to limit the movement of the lever. The said springs project from and are firmly secured to screws H H, which are screwed through the bottom of the chamber A, and ICQ are provided below the said chamber with square heads or ends, to which a wrench or key may beapplied to turn them slightly to vary the pressure of the upper spring on the lever F, and to adjust thelower one to permit the required movement of the lever F. The turning of the screws is simply to shift the horizontally-prolonged portion of the springs I,

and pins fitting tightly in holes might be substituted, the pins being held by friction after adjustment. By the adjustment of the springs to the lever in the manner stated the entrance of gas to the chamber A and its exit therefrom will be duly regulated to suit the number of burners required.

In Figs. 2 and 3,'which relate to the appli cation of the apparatus to asingle burner, the lever F is shown with its fulcrum at G between the inlet-valve B and the outlet-valve E, which are both formed in the pipe K D. leading to the burner, the inlet valve B being on one side and the oulet-valve E on the opposite side of the partition or stop L in the said pipe. The inlet-valve B is weighted; or a weight is affixed to the inlet end of the lever for the purpose of closing the inlet by the simple action of gravity.

From the foregoing arrangement it will be seen that as the gas passes through the pipe K it will, by opening the inlet-valve B, be caused to enter the chamber A, the ,outletvalve at E being closed by the action of the lever F until, on the pressure on each side of the valves becoming equalized, or nearly so, the simple action by gravity of the inlet-valve B or of the weight on the lower part of the lever F will tend to close or contract the opening of the said valve" and give wider opening to the outlet-valve E to control the passage of the gas from thechamber A to the burner. The partition or stop L serves to prevent the passage of gas to the burner except through the chamber A in the manner described.

We claim as our invention- The combination of the chamber A, the tube D, containing the partition L and inlet and outlet openings below and above said partition, the inlet and outlet valves B E, the lever F, and the adj listing-springs 1 I, substantially as and for the purpose herein described.

JOHN MGLENNAN.

ltlOHI). OWEN.

Witnesses:

WILLIAM SPENoE, W. H. READ. 

